British girl band Sugababes were devastated when singer Mutya Buena quit in December (05), because she announced her departure through their management. Keisha Buchanan and Heidi Range knew their relationship with Buena was reaching breaking point, but the PUSH THE BUTTON stars, who replaced Buena with Amelle Berrabah, were shocked when she refused to speak with them directly. Range says, "Mutya didn't tell us. She just told the management. "They called Keisha and me. I knew it was going to happen, but when the call came through to say she'd actually done it, I cried. "I don't know if it was because it was something that had been building for so long."